Air quality meter



FIG. 1 is a perspective view of an air quality meter showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines illustrate portions of the air quality meter that form no part of the claimed design. 

CLAIM The ornamental design for an air quality meter, as shown and described. 